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SO2 and dust comprehensive treatment absorber

A comprehensive treatment and absorbent technology, applied in the direction of gas treatment, use of liquid separation agent, membrane technology, etc., can solve the problems of complex preparation methods, harsh reaction conditions, desulfurization agent can not achieve desulfurization and dust removal at the same time, to achieve simple preparation, The effect of low requirements on preparation conditions, good environmental benefits and social benefits

Active Publication Date: 2016-03-23
HEZE XINDING ENVIRONMENTAL ENG EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its preparation method is complex and the reaction conditions are harsh
In addition, these desulfurizers cannot achieve the purpose of desulfurization and dust removal at the same time

Method used

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  • SO2 and dust comprehensive treatment absorber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] SO 2 , Preparation of dust absorbent

[0029] Choose 100m 3 Fermentation tank, add 0.3% corn steep liquor, 3% soybean flour, 0.1% soybean oil and add water to form a fermentation medium, add 5% Aspergillus species for fermentation; fermentation temperature is 30-35°C, stirring speed is 500rpm, fermentation After 30 hours, centrifuge to remove solid impurities to obtain fermentation broth.

[0030] Add 0.6% amphoteric surfactant (dodecyl ethoxy sulfobetaine) and 1% crushed grass clippings to the fermentation broth, and stir to obtain the protein ion membrane liquid.

[0031] Add NaOH and NaOH to the above protein ion membrane solution 2 CO 3 solution, so that the pH of the solution after mixing is 9, that is, SO 2 , Dust absorbent.

Embodiment 2

[0033] Desulfurization and dust removal process

[0034] The treatment system includes a water film dedusting tower 1, a desulfurization tower 2, a regeneration tank 3, a lime slurry preparation tank 4, a sedimentation tank 5, a circulation tank 6, and an ion membrane liquid tank 7. The flue gas produced by two 35t boilers first enters the desulfurization tower 2 through the water film dedusting tower 1, and the SO prepared in the embodiment 1 in the desulfurization tower 2 , Dust absorbent to spray flue gas, absorb SO 2 Na 2 SO 3 The solution enters the regeneration tank 3, and the purified gas treated by the desulfurization tower is first monitored by an on-line monitoring instrument, and the flue gas that reaches the standard can be discharged into the atmosphere through the chimney, and the lime slurry prepared in the lime slurry preparation tank 4 is pumped into the regeneration tank 3 for regeneration. Stir and mix evenly in the pool 3 and pump it into the sedimentati...

Embodiment 3

[0038] SO 2 , Preparation of dust absorbent

[0039] Choose 100m 3 Fermentation tank, add 0.5% corn steep liquor, 5% soybean flour, 0.08% soybean oil and add water to form a fermentation medium, add 6% Aspergillus species for fermentation; fermentation temperature is 30-35°C, stirring speed is 500rpm, fermentation After 25 hours, centrifuge to remove solid impurities to obtain fermentation broth.

[0040] Add 0.8% amphoteric surfactant (dodecyl ethoxy sulfobetaine) and 1.2% crushed grass clippings to the fermentation broth, and stir to obtain protein ion membrane liquid.

[0041] Add Ca(OH) to the above protein ion membrane solution 2 with Na 2 CO 3 solution, so that the pH of the solution after mixing is 10, that is, SO 2 , Dust absorbent.

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Abstract

The invention discloses an SO2 and dust comprehensive treatment absorber and belongs to the technical field of desulfurization and dust removal. The absorber is a mixed liquid 8-11 in pH comprising a protein ion membrane liquid and an alkaline liquid; the protein ion membrane liquid is a liquid membrane carrying negative and positive ions that is formed by adding an amphoteric surfactant and a foam stabilizer in a protein fermentation broth. The protein ion membrane liquid forms small-diameter bubbles during spray atomization, greatly increasing specific surface area (thousands of times in this increase), that is to say the area of contact between SO2 and an absorber liquid is increased, better facilitating the trapping of dust and SO2 in smoke; therefore, mass transfer contact residence time of an absorbed gas between gas and liquid phases is much longer than the retention time of the gas in the liquid phase to react with the alkaline liquid, and reaction is given sufficient time, that is to say the reaction time of SO2 with the absorber liquid is prolonged.

Description

technical field [0001] The invention relates to the technical field of desulfurization and dust removal, in particular to a SO 2 , dust comprehensive treatment absorbent. Background technique [0002] my country is the world's largest coal producer and consumer. With the continuous acceleration of economic development, my country's total energy consumption continues to increase, resulting in further aggravation of dust and sulfur dioxide pollution, which has become an important environmental factor restricting social and economic development. Controlling The emission of soot and sulfur dioxide and the desulfurization and dust removal of coal-fired boilers have become the top priority of environmental protection in my country. [0003] The types of desulfurizers currently used are: calcium such as CaCO 3 , Ca(OH) 2 , magnesium such as MgO, sodium such as Na 2 CO 3 , NaOH, ammonia such as NH 3 , Organic bases. Obviously, the performance of the absorbent plays a decisive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/50B01D47/02
CPCB01D47/02B01D53/501B01D53/78B01D2251/2062B01D2251/304B01D2252/102B01D2252/20494B01D2252/205B01D2257/302B01D2258/0283
Inventor 彭继先
Owner HEZE XINDING ENVIRONMENTAL ENG EQUIP
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